You Can Always Duck is a 1943 thriller novel by the British writer Peter Cheyney.

[1] It is the ninth in his series of novels featuring the FBI agent Lemmy Caution.

[2] The action takes place in wartime London where Caution is on the trail of a gang of black marketeers who have got mixed up in espionage.

It was one of a number of films and novels of the period that made use of the booming black market for their setting.

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